A global DC branch model incorporating power system flexibility

TL;DR

This paper introduces a comprehensive branch model for DC optimal power flow that captures various power system components and their controllable parameters, enhancing the ability to optimize system flexibility.

Contribution

It presents a generalized branch model that includes multiple types of power system elements and their controllable features for improved DCOPF applications.

Findings

Model effectively represents diverse power system components.

Application to various system scales demonstrates versatility.

Enhances optimization of remedial actions using system flexibility.

Abstract

In this letter we propose a generalized branch model to be used in DC optimal power flow (DCOPF) applications. Besides AC lines and transformers, the formulation allows for representing variable susceptance branches, phase shifting transformers, HVDC lines, zero impedance lines and open branches. The possibility to model branches with concurrently variable susceptance and controllable phase shift angles is also provided. The model is suited for use in DCOPF formulations aimed at the optimization of remedial actions so as to exploit power system flexibility; applications to small-, medium- and large-scale systems are presented to this purpose.